Draining Nissan NS90A trim/tilt fluid?

[gw204]

I recently picked up a 2000 Nissan NS90A for the Mako 17 I'm restoring. The motor hasn't been used in several years so I will be going through it with a fine tooth comb before I even attempt to start it.

One of the things I need to address is the trim/tilt. I have verified that the pump will run when 12V is applied, but the hydraulics didn't move. When I cracked open the manual release valve to lower the motor completely, I could hear a fair amount of air in the system. So, I am hopeful that simply purging the system of the current fluid and starting fresh will solve this problem.

According to the owner's manual I downloaded, any GM-approved automatic trans fluid is OK to use in the system, but it says not to mix brands, and to completely drain the system prior to refilling. Since I don't know what is in there now (I suspected the Nisseki Dexron that the manual lists), and I already have Dexron III at home (mj Jeep uses it) I would like to do exactly that However, I am not sure how to go about draining. Is there a drain screw somewhere? If anyone could shed some light on this for me, I would greatly appreciate it.


Thanks.

Brian

 

[pvanv]

Re: Draining Nissan NS90A trim/tilt fluid?

We don't fret about different kinds of Dexron. Current ATF is compatible with the earlier formulas. Just fill and purge air. May require several purges over several days. BTW, FWIW, that motor could be as old as 1992 or earlier (20+ years old), depending on serial number. And there are early and late tilt/trim systems, depending on serial number.

 

[TOHATSU GURU]

Re: Draining Nissan NS90A trim/tilt fluid?

You may wnat to pick up the factory service manual to see the procedure for the trim...